> Europeans are overly sensitive about "micro-friendliness". I've heard people complain that the cashier at the grocery store asks "How are you doing?". "They don't really care, why do they ask!"
This is more of an expectations thing; certainly in Dutch, asking "how are you doing" is something you do when you ask when you really want to start a conversation, and you expect a somewhat serious reply in return, whereas in some other cultures it essentially just means "hi" with no expectation of a real answer beyond "good" or some such.
When I worked for an Irish company I had some coworkers say "how are ya" when meeting in the hallway or some such; I started replying serious ("yeah, I'm good, last night I [..]") but they didn't really expect an answer so continued walking leaving us both confused; me as they didn't stop, and them as I started a conversation. It led to some awkward-y situations before I figured this out haha
At any rate, I don't think it's "sensitivity", it's just that these words are taken to have a different meaning. These are the kind of subtle things about learning a language; you can know all the words and grammar, but you also need to learn what's meant with them, and that can actually be pretty hard. Translating a simple sentence such as this is easy, but really understanding what's intended (which may differ on the tone of voice, location, context, etc.) is really hard, and even Europeans who speak good English but haven't spent a lot of time in English-speaking countries tend to fail at this (I certainly did) as it's not really something you can learn from communicating in English over text either.